Abstract: A glow discharge lamp for qualitative and quantitative spectrum analysis having a discharge chamber closable on the cathode side by an electrically conductive disk at cathodic potential in which, to increase the luminous intensity and the accuracy of the analysis, a ring magnet of permanent magnet material magnetized in axial direction for producing a magnetic field extending substantially in axial direction in the discharge chamber is provided and a control electrode which is insulated from the anode body is provided.

Abstract: A lock coupling for safety belts includes a housing formed with an aperture in the top through which a release button is accessible. The housing has a plug aperture for receiving a coupling part adjustably attached to a safety belt and a coupling pocket having a locking bar is accommodated in the housing and is connected to a tension member secured to a vehicle chassis. The coupling part has a lock latch engageable with the locking bar and the latching is automatically releasable, against the action of the spring force corresponding to a definite minimum pull load of, for example, 75-80 kgs. Automatic disengagement is effected, on one hand, by an electromagnet responsive, with time delay, to an electronic time switch which is switched on responsive to occurrence of a definite minimum pull load, and, on the other hand, by a locking part which is displaceable by the locking bar.